Physicists fired polarized laser pulses at a block of glass, creating distortions that emitted
Hawking radiation out the sides of the block (inset).
Not exact matches
His new theory is that
Hawking radiation can pick up some of the information stored on the event horizon as it is emitted, providing a way for it to get
out.
But even if the sonic
radiation as it stands is not a perfect match, William Unruh, a theoretical physicist at the University of British Columbia in Vancouver points
out that «it is the closest anyone has come» to detecting
Hawking radiation.
By taking the change in the black hole's spin, and her half of the
Hawking radiation that is emitted after she drops the qubit, Alice can use the rules of quantum teleportation to work
out the spin of the qubit she dropped into the black hole — and hence retrieve information from beyond the black hole's event horizon.
After taking steps to rule
out possible contamination from more mundane mechanisms, such as fluorescence, the group concluded that the photons appeared to be spontaneously produced from the same physics underlying
Hawking radiation.
If you have something that implodes to make a black hole, which then completely evaporates due to
Hawking radiation, does all the information that went into the black hole come back
out?
Originally, he argued that this «
Hawking radiation» is so random that it could carry no information
out about what had fallen into the black hole.
As
Hawking radiation travels
out, an impression of the object's identity is stamped on the hologram.
Physicists believe that information about the contents of a black hole radiates
out from its surface in the form of
Hawking radiation.
Robbins occasionally takes time
out from his usual seminar patter to
hawk unrelated products — like QLink, a pendant that, he says, will protect you from cell - phone
radiation, electromagnetic pulse, and other types of harmful ambient energy.